second frequency regulation
FRR 包括一次调频(primary frequency regulation， PFR)、二次调频(second frequency regulation，SFR) 所对应的一次调频备用容量(primary frequency regulation reserve...
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second frequency regulation
第二频率调节
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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To keep power flowing reliably, grid operators must smooth out supply and demand on a second-to-second basis (known as frequency regulation), an hourly basis (intermittency), and on a daily, weekly, and annual basis (meeting peak demand).
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